Filters








30,865 Hits in 4.0 sec

Co-optimizing application partitioning and network topology for a reconfigurable interconnect

Deepak Ajwani, Adam Hackett, Shoukat Ali, John P. Morrison, Stephen Kirkland
2016 Journal of Parallel and Distributed Computing  
u t h o r s v e r s i o n o f a w o r k t h a t  ...  Publication information Journal of Parallel and Distributed Computing, 96 : 12-26 Publisher Elsevier Item record/more information http://hdl.handle.net/10197/9893 Publisher's statement þÿ T h i s i s t h e a  ...  Note that this approach is similar to the one used in Scotch [14] . We use METIS to partition the two graphs.  ... 
doi:10.1016/j.jpdc.2016.04.010 fatcat:w3pfy3oepfagfoljr2hqcw4kze

Sparsest cuts and bottlenecks in graphs

David W. Matula, Farhad Shahrokhi
1990 Discrete Applied Mathematics  
The problem of determining a sparsest cut in a graph is characterized and its computation shown to be NP-hard.  ...  A class of sparsest cuts, termed bottlenecks, is characterized by a dual relation to a particular polynomial time computable multicommodity flow problem.  ...  For the partition A, A of V, the cut (A, A) denotes all edges with one end vertex in A and the other in A.  ... 
doi:10.1016/0166-218x(90)90133-w fatcat:lui3srdiezgo3dpn4rethkwfdq

Quantum network routing and local complementation

F. Hahn, A. Pappa, J. Eisert
2019 npj Quantum Information  
Specifically for the two-pair problem, the butterfly network provides the first instance of such an advantage in a bottleneck scenario.  ...  We finally consider the problem of extracting graph states for quantum communication via local Clifford operations and Pauli measurements, and discuss that while the general problem is known to be NP-complete  ...  Wehner and A. Dahlberg for discussions. Upon completion of this work, we became aware of work similarly motivated 31, 39  ... 
doi:10.1038/s41534-019-0191-6 fatcat:wwg525vplvd5re4afj6uopgcxa

Graph Partitioning for Reconfigurable Topology

Deepak Ajwani, Shoukat Ali, John P. Morrison
2012 2012 IEEE 26th International Parallel and Distributed Processing Symposium  
In particular, they helped us build a better understanding of the optical circuit switches.  ...  ACKNOWLEDGEMENTS The authors are grateful to Kostas Katrinis, Rolf Riesen, Dilma da Silva and Cheng-Hong Li for their valuable feedback.  ...  Note that this approach is similar to the one used in Scotch [16] . We use METIS to partition the two graphs.  ... 
doi:10.1109/ipdps.2012.80 dblp:conf/ipps/AjwaniAM12 fatcat:son72jccanhf7hqjr6jp5qrcxm

A unified approach to approximation algorithms for bottleneck problems

Dorit S. Hochbaum, David B. Shmoys
1986 Journal of the ACM  
Each of the algorithms presented here delivers an approximate solution guaranteed to be within a constant factor of the optimal solution.  ...  In addition, for several of these problems we can show that unless P = NP, there does not exist a polynomial-time algorithm that has a better performance guarantee.  ...  Shmoys was supported in part by the National Science Foundation by a graduate fellowship and under grant MCS 83-l 1422 and in part by DARPA order 403 I, monitored by Naval Electronic System Command under  ... 
doi:10.1145/5925.5933 fatcat:wbz46e4jurabbaw6c7es74c5cy

A multi-level bottleneck assignment approach to the bus drivers' rostering problem

P. Carraresi, G. Gallo
1984 European Journal of Operational Research  
This problem is formulated as a Multi-level Bottleneck Assignment Problem (MBA). The MBA problem is studied: it is shown that it is NP-complete and an asymptotically optimal algorithm is presented.  ...  The problem of finding a work assignment for drivers in a given time horizon, in such a way as to have an even distribution of the workload, is considered.  ...  It can be noted that the modified algorithm is actually an algorithm which solves the bottleneck bi-partite matching problem.  ... 
doi:10.1016/0377-2217(84)90071-7 fatcat:i5chymaysrarribgoncewfl4i4

Survivable minimum bottleneck networks

C.J. Ras
2015 Computational geometry  
Our algorithm is based on the construction of generalised Voronoi diagrams and relative neighbourhood graphs.  ...  We show that the survivable bottleneck Steiner tree problem in normed planes can be solved in polynomial time when the number of Steiner points is constant.  ...  Note that this then solves the general fixed topology problem since any graph can be decomposed into full graphs which can then be solved independently.  ... 
doi:10.1016/j.comgeo.2015.06.002 fatcat:f7sasho7bje4tka6b7bral4qv4

Fast, Quality, Segmentation of Large Volumes – Isoperimetric Distance Trees [chapter]

Leo Grady
2006 Lecture Notes in Computer Science  
We propose a new approach based on a novel speed-up of the isoperimetric algorithm [1] that can solve the problem of leaks through a bottleneck.  ...  The speed enhancement converts the isoperimetric segmentation algorithm to a fast, linear-time computation by using a tree representation as the underlying graph instead of a standard lattice structure  ...  In particular, it is known that the solution to the isoperimetric problem often partitions the manifold at bottleneck points, as exhibited in Cheeger's classic paper on the subject [21] .  ... 
doi:10.1007/11744078_35 fatcat:4kavebiafza73nvaqgmpybpaze

Page 4076 of Mathematical Reviews Vol. , Issue 97G [page]

1997 Mathematical Reviews  
); Pathria, Anu (1-CA-I; Berkeley, CA) The bottleneck graph partition problem.  ...  Summary: “The bottleneck graph partition problem is to parti- tion the nodes of a graph into two equally sized sets, so that the maximum edge weight in the cut separating the two sets is mini- mum.  ... 

On Graphs, GPUs, and Blind Dating: A Workload to Processor Matchmaking Quest

Abdullah Gharaibeh, Lauro Beltrao Costa, Elizeu Santos-Neto, Matei Ripeanu
2013 2013 IEEE 27th International Symposium on Parallel and Distributed Processing  
Our evaluation illustrates that processing a 4-billion edges graph on a system with one CPU socket and one GPU, while offloading as little as 25% of the edges to the GPU, achieves 2x performance improvement  ...  In particular, the workload generated by a partitioning scheme should match the strength of the processing element the partition is allocated to.  ...  ACKNOWLEDGMENTS We thank NVIDIA for donating the GPU cards used in evaluating this work.  ... 
doi:10.1109/ipdps.2013.37 dblp:conf/ipps/GharaibehCSR13 fatcat:ygdx5oywkjdb5aggculowgo27e

Page 668 of Mathematical Reviews Vol. , Issue 95b [page]

1995 Mathematical Reviews  
When V’ = V, the problem is called the k-partition problem.  ...  Summary: “In this paper, we study the problem of identifying an optimal biconnected spanning subgraph of an undirected graph with respect to a bottleneck objective function.  ... 

ON BOTTLENECK PARTITIONING OF k-ARY n-CUBES

DAVID M. NICOL, WEIZHEN MAO
1996 Parallel Processing Letters  
We desire to partition the graph into p node sets, assigned one per processor, so as to minimize the bottleneck cost. The problem is not entirely academic.  ...  The problem of partitioning a communication topology arises, for instance, when one executes a parallel simulation of tra c on a k-ary n-cube network 7, 1].  ...  Partitioning of such graphs is a problem that arises in network design, and in parallelized simulation of such networks.  ... 
doi:10.1142/s0129626496000376 fatcat:hf2tkvl2tjga3l2mtycdka7uf4

Improving spanning trees by upgrading nodes [chapter]

S. O. Krumke, M. V. Marathe, H. Noltemeier, R. Ravi, S. S. Ravi, R. Sundaram, H. C. Wirth
1997 Lecture Notes in Computer Science  
We study bottleneck constra&ed network upgradin 9 problems. We are given an edge weighted graph G = (V,E) where node v E V can be upgraded at a cost of c(v).  ...  The performance is measured by the bottleneck weight of a minimum spanning tree.  ...  The problem specifies a budget value D on the objective f2. A solution x is valid, if it belongs to the graph class 5 e and satisfies the constraint f2(x)<~D on the objective f2.  ... 
doi:10.1007/3-540-63165-8_185 fatcat:egeorx433nagbkn2lcsbbv64ia

Bottleneck Convex Subsets: Finding k Large Convex Sets in a Point Set [article]

Stephane Durocher, J. Mark Keil, Saeed Mehrabi, Debajyoti Mondal
2021 arXiv   pre-print
This paper examines a generalization of the problem, the Bottleneck Convex Subsets problem: given a set P of n points in the plane and a positive integer k, select k pairwise disjoint convex subsets of  ...  We show the problem is NP-hard when k is an arbitrary input parameter, we give an algorithm that solves the problem exactly, with running time polynomial in n when k is fixed, and we give a fixed-parameter  ...  Note that the Bottleneck Convex Subsets problem is straightforward to solve for the case when k ≥ n/3, i.e., one needs to compute a balanced partition without worrying about the convexity of the sets.  ... 
arXiv:2108.12464v1 fatcat:cq3sqlhqwnfgnlchvafrg6dc2i

Approximation Algorithms for the Bottleneck Stretch Factor Problem [chapter]

Giri Narasimhan, Michiel Smid
2001 Lecture Notes in Computer Science  
stretch factor of the graph G b , which is the threshold graph on S containing all edges of length at most b.  ...  The stretch factor of a Euclidean graph is the maximum ratio of the distance in the graph between any two points and their Euclidean distance.  ...  Note that m ≤ n 2 . Let G 0 be the graph on S having no edges.  ... 
doi:10.1007/3-540-44693-1_44 fatcat:e4yze2vgszbcxeqgeymau2tbh4
« Previous Showing results 1 — 15 out of 30,865 results